Surgery is an effective method of treating cancer when
A) a primary tumor has spread through the blood stream.
B) a primary tumor is yet to invade healthy tissue.
C) all rapidly dividing cells are targeted by the surgery.
D) a patient has multiple tumors spread across his or her body.
B) a primary tumor is yet to invade healthy tissue.
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The species concept based on analysis of character states that indicate the smallest monophyletic group is ________
A) the morphospecies concept B) the phylogenetic species concept C) the biological species concept D) the ecological species concept
If chemical signals in the cytoplasm control the progression of a cell to the M phase of the cell cycle, then fusion of a cell in G1 with a cell in early M phase would most likely result in the
(A) replication of chromosomes only in the G1 cell (B) exiting of both cells from the cell cycle and into the G0 phase (C) condensation of chromatin in preparation of nuclear division in both cells (D) transfer of organelles from the G1 cell to the cell in the M phase
Which of the following is a J-shaped muscular sac that serves in the temporary storage of masticated food while digestive enzymes and HCl are released to digest proteins?
A) colon B) esophagus C) stomach D) large intestines
How do we know that the molecular function of a Hox gene is conserved across species?
What will be an ideal response?